Eastman-kodak Company

Heidelberger Druckmaschinen Ag

Dr. Ing. Rudolf Hell Gmbh

Lutz Rebetge

Dirk Dobrindt

Ralf Balzeit

Ulrich Parl

Klaus Andree

Apparatus for depositing sheets on a stack, which permits essentially free access to the stack and can be implemented with a low outlay of materials and costs. The apparatus includes on the side of the stack () that faces a machine, tongues () with which frictional elements () can be brought into and out of contact and which can be moved in the conveying direction () of the sheets () and in the opposite direction, and can be lowered onto the stack (), and wherein on the side of the stack () that faces the machine, at least one hold-down () is provided which can be moved in the conveying direction () of the sheets () and in the opposite direction, and can be lowered onto the stack ().

Device for depositing sheets on a stack

A device for conveying and depositing paper on at least one stack, with a device () for moving conveyor rollers () laterally in the conveying direction of the sheets and a device () for transmitting rotations to conveyor rollers (), in particular to operate within a depositing device of a sheet-processing machine. In order to ensure a quicker lateral movement of conveyor rollers () and to protect the devices () and () from soiling and mechanical effects, members of the same are located within a rod (), on which conveyor rollers () are located. Furthermore, there are possibilities to calibrate the device with respect to the position of conveyor rollers () and to adjust height differences within a stack with tensionless equalization.

Conveyor roller device for depositing sheets on a stack

An apparatus for point by point and line by line scanning of originals or documents includes a fixed, transparent original carrier for an original. An illumination carrier is disposed above and parallel to the original carrier. An illumination unit is fixed to the illumination carrier for illuminating the original line by line. A base carrier parallel to the illumination carrier is disposed under the original carrier and an optoelectronic scanning head for converting scanning light into picture signals is fixed thereon. The illumination carrier and the base carrier are interconnected by a U-shaped connecting element. The connecting element has a rotary joint for pivoting the illumination carrier away from the original carrier with the illumination unit to facilitate access to the original carrier. The illumination unit and the scanning head perform a perpendicularly oriented feed movement in relation to scanning lines through the use of linear guides, in order to scan a surface of the original.

Apparatus for scanning originals

An opto-electronic scanning head for drum and flat bed scanning apparatus for point-by-point and line-by-line scanning of opaque and transparent originals which are illuminated point-by-point. The housing of the scanning head 7 has a front panel 9 which is displaceable along the optical axis 12 of the scanning objective lens 11 and has a housing part which is stationary with respect to the optical axis 12. The scanning objective 11 is mounted in the front panel 9, but the diaphragm 13 and the opto-electronic transducer 14 are mounted in the housing portion 8. The scanning objective 11 can be displaced over a broad range with a sensitive adjustment mechanism for the front panel 9 so that the focus range can always be placed into the image plane of the originals and thus optimum image sharpness can be achieved for originals having all different thicknesses. In the scanning head 7 for opaque scanning, the illumination system 27, 28, 29, and 31 is used for the point to point illumination of the originals and the illumination system is arranged in the displaceable front panel 9 such that the optical axis 30 extends through the focus range of the scanning objective 11 and as a result the illumination system 27, 28 and 29 always generates a focus illumination point on the original regardless of the position of the front panel 9 or of the scanning objective 11 so that optimum illumination of the originals is always achieved for all thicknesses of originals and also the optimum image is maintained sharp.

Growing community of inventors

Kiel, Germany

Lutz Rebetge